JPH02206Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for preventing unauthorized removal of coins from a hopper type coin ejector of a coin game machine.

With reference to FIGS. 1 to 4, first, a hopper type coin ejecting machine of a coin game machine and possible fraudulent means thereof will be explained. The coin game machine C shown in FIG.
is rotated to rotate the three rotating bodies 3 at high speed, and then a stop switch 4 is operated to stop each rotating body 3. Prize coins are obtained depending on the combination of the rotating bodies 3. Reference numeral 5 indicates a see-through window for viewing the combination of the rotating bodies. This game machine therefore has the same function as a so-called slot machine, but the present invention is intended not only for the above-mentioned coin game machine but also for all game machines that use coins as a game medium.

The coin slot 1 of the game machine described above communicates with an inclined coin rail 6 on the back surface of the front frame of the game machine C via a guide gutter 7, and an introduction gutter 8 is connected to the middle part of the coin rail 6. A hopper type coin ejecting machine 9 is connected thereto. The coin rail downstream from the introduction gutter 8 forms an overflow gutter 10 for sliding down the inserted coins when the coin ejector 9 is filled with coins, and a coin storage tank 11 is connected to the end of this gutter. .

The hopper type coin ejecting machine 9 includes a hopper 12 for storing coins, a delivery board 13 rotatably provided at the bottom of the hopper 12, a motor 14 and a speed reducer 15 for rotationally driving the delivery board 13. . The delivery board 13 is inclined parallel to the sloping bottom surface 12a of the hopper 12 so as to sandwich the coin between it and the bottom surface, and around it there are intake holes 16 spaced at 90° intervals for taking in coins one by one. There are four holes in the hole. The inner edge of this mounting hole 16 is provided with an arc-shaped extrusion projection 17 that protrudes toward the bottom surface 12a, and the coin that has fallen into the intake hole 16 and comes into contact with the bottom surface 12a is moved by this extrusion projection 17 to the delivery board 1.
3 and rotated. And hoppa 1
A coin ejection port 18 that communicates with the bottom surface 12a is protruded from a part of the side of the bottom of the hopper 2, and a coin passage 19 on the side of the coin passage 19 between the coin ejection port 18 and the hopper bottom 12a is provided on the lower surface of the delivery board 13. A rotating shaft 21 of a guide swinging plate 20 is disposed. The guide swinging plate 20 is always urged by the return spring 21' in a direction in which it comes into contact with the coin sent by the feed-out plate 13, which rotates downward in FIG. It has a function of guiding the coin from the coin passage 19 to the coin ejection port 18 while being pushed by the coin when it comes into contact with the coin. On the other hand, on the side of the coin passage 19 opposite to the guide swing plate 20, there is provided a discharged coin detector 22 which is pressed by discharged coins and turned on for a certain period of time. The ejected coin detector 22 is operated by driving the motor 14 in response to a score signal corresponding to the game result, and rotating the ejecting board 13 to detect the coin ejecting port 1 as described above.
When coins are ejected from 8, it is turned on and off for each ejected coin. This on/off signal is used to count the number of coins to be ejected, and when the actual number of coins to be ejected reaches the commanded number of coins to be ejected, the motor 14 is stopped.

However, in the coin ejecting device configured as described above, if the player leaves the ejected coin detector 22 on using a piano wire, for example, before the final coin is ejected, the number of ejected coins is counted. The off signal of the coin detector 22, which is essential for issuing a stop signal to the motor 14, will not be issued. Therefore, the feed plate 13 continues to rotate, and the hopper 1
The coins in 2 will be illegally taken out.

The present invention was made to prevent such unauthorized withdrawal of coins, and the time when the ejected coin detector is turned on by the ejected coin,
In other words, a fraud detection means is provided that detects whether the pulse width is below or above a predetermined value, and issues a normal coin detection signal when it is below the predetermined value, and issues an emergency signal when it exceeds the predetermined value. It is characterized by

Referring to the illustrated embodiment _, in FIG. Second D-type flip-flop 2
7 is input. The output ₁ of the first D-type flip-flop 26 and the output _Q2 of the second D-type flip-flop 27 are input to an AND circuit 28,
The output of the AND circuit 28 becomes a coin detection signal. The above is the normal coin detection circuit N.

On the other hand, the fraud detection circuit U uses the coin detection signal as a reset signal, receives pulses from the counter 29 which issues a carry signal when it detects "0", the ejected coin detector 22 and the pulse oscillator 25, and outputs the output. It is composed of an AND circuit 30 that supplies a signal to a counter 29.

The operation of the above circuit will be explained according to the timing charts shown in FIGS. 6A and 6B. When a coin is normally ejected, the ejected coin detector 22 is turned on when the ejected coin is ejected, and the width of the ejected coin detector 22 as shown in FIG. produces l pulses. The D-type flip-flops 26 and 27 are
It has the function of differentiating the oscillation pulse, and produces an output of "1" by the rise of the first C _p input pulse while the D input is "1", and outputs "1" after the D input becomes "0". Since the output of the first D-type flip _- flop 26
The outputs Q ₁ and ₁ are as shown in the same figure. On the other hand, the output Q ₂ of the second D-type flip-flop 27 is
Since the output Q ₁ is used as the D input, a time difference, that is, a time difference equal to the pulse interval of the pulse oscillator 25, occurs between the output Q ₁ and the output Q ₁ of the first D-type flip-flop 26. Therefore, the AND circuit 28 receiving the above outputs ₁ and _Q2 produces output pulses having the above pulse interval. This output pulse is used as a coin detection signal for counting coins and as a stop signal for the coin ejection machine 9.

On the other hand, the counter 29 of the fraud detection circuit U is decremented by 1 by the AND circuit 30 for each pulse of the pulse oscillator 25 while the ejected coin detector 22 is generating a pulse, but when the coin is normally ejected, the above coin is detected. Since it is repeatedly reset by the signal, it never becomes "0" and therefore no emergency signal is generated. In other words, in the illustrated example, the number of oscillation pulses generated during the pulse width l of the ejected coin detector 22 is approximately 4 pulses, so if more pulses than this, for example 6 pulses, are set in the counter 29, the number of oscillation pulses generated during the pulse width l of the ejected coin detector 22 is approximately 4. Counter 29 is “0”
The coin detection signal always resets the counter 29 to 6 pulses before the coin detection signal reaches 6. Therefore, no emergency signal is issued.

In response to this, the ejected coin detector 22
If it continues to be turned on, the ejected coin pulse will not become "0" as shown in FIG. 6B, so no coin detection signal will be generated. Therefore, since the counter 29 is not given a reset signal, it eventually detects "0" and issues an emergency signal. This emergency signal may be a bell or other alarm signal, or a coin ejector 9.
It can be used as a stop signal for the motor 14.

Next, FIG. 7 shows a circuit which is an extension of the circuit shown in FIG. 5 and can simultaneously detect the absence of coins in the hopper 12. What is added to the circuit of FIG. 5 is a second counter 31 and a motor 1.
4 and a pulse from the pulse oscillator 25 and inputs the received signal to the second counter 31, and a coin detection signal is given to the second counter 31 as a reset signal. In this circuit, the number of pulses corresponding to the maximum number of coins discharged at one time and the number of margin pulses are set in the second counter 31. For example, in current coin game machines, the highest score is
Since there are 10 points, the continuous driving time of the motor 14 is
This is the time required to eject 10 coins. Therefore, the second counter 31 is set to the number of oscillation pulses for 10 coins and a margin, for example, 4 pulses x 10 coins + 10 pulses = 50 pulses. Then, if a coin does not run out, the second counter 31 is always reset by the coin detection signal, so no coin out signal is generated, whereas if a coin runs out, a reset signal, that is, a coin detection signal, is not generated. Therefore, the second counter 31 will eventually become "0". Therefore, a carry signal, that is, a coin-out signal is obtained. If this circuit is added, the coin-out detector 23 in the hopper 12 becomes unnecessary. The coin-out signal can be given to the control room and can also be used as a stop signal for the motor 14 at the same time.

In the above-mentioned embodiment, the fraud detection means is constituted by various circuits, but the invention is not limited to this, and it is possible to centrally control various devices of the coin game machine.
The CPU (Central Processing Unit) may be used to perform central processing, such as issuing an alarm using an emergency signal output from the CPU, or controlling the motor 14 of the coin ejector 9. It's okay.

In summary, the present invention determines whether the width of the pulse generated while the coin detector is turned on by the ejected coin is less than or equal to a predetermined value.
It is designed to determine whether the coin ejecting operation is normal or abnormal, and to issue an emergency signal if it is abnormal, so it prevents unauthorized removal of coins that may occur by turning on the coin detector by unauthorized means. It can be prevented.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an example of a coin game machine, Fig. 2 is a front view of a hopper type coin ejector and its surroundings, and Fig. 3 is a sectional view taken along the - line in Fig. 2.
4 is a sectional view taken along the - line in FIG. 3, FIG. 5 is a circuit diagram showing an embodiment of the fraud prevention device according to the present invention, and FIGS. 6A and 6B are timing charts of the circuit in FIG. 5, respectively. , FIG. 7 is a circuit diagram in which a coin-out signal circuit is added to the circuit of FIG. 5. C... Coin game machine, 1... Coin slot,
6... Coin rail, 8... Introducing gutter, 9... Hopper type coin discharge machine, 12... Hopper, 13... Delivery board, 14... Motor, 16... Intake hole, 22...
...Ejected coin detector, N...Coin detection circuit, U
...Fraud detection circuit.

Claims (1)

[Scope of utility model registration request] A discharge coin detector is turned on when pressed by a coin discharge port of a hopper-type coin discharge machine, in which a coin discharge board is rotationally driven by a score signal from a coin game machine and coins are discharged from a take-in hole of the discharge board. In a coin ejecting device which is provided with a coin ejecting signal from this detector and uses the coin ejecting signal from the detector as a stop signal for counting ejected coins and for the above-mentioned sending board, the width of the pulse generated while the ejecting coin detector is turned on by the ejecting coin. A fraud prevention device for a coin ejecting device, characterized in that a fraud detection means is provided for emitting a coin detection signal for each ejected coin when the width of the pulse is within a predetermined value, and emitting an emergency signal when the width of the pulse exceeds a predetermined value. Device.